The NRF24L01 module uses the 2.4GHz transceiver from Nordic Semiconductor, nRF24L01+. This transceiver IC operates in the 2.4GHz band and has many new features! It helps you establish an easy and affordable communication system.
This card has a reverse polarized SMA connector for maximum RF range. And there is PA and LNA circuit on the board, with external antenna can reach long distance than without these parts.
This module comes with 2.4G antenna (2DB), outdoor It can reach a communication distance of 800-1000 meters with a transmission speed of 250Kbps in the air.